Solve 10x + 4 = −26

The solution of 10x + 4 = −26 is x = -3.

10x + 4 = -26\ \Rightarrow\ x = -3

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The lines y = 10x + 4 and y = -26 meet at x = -3. The solution of the equation is the x-coordinate of the point where the two sides are equal.

How to work it out

1
The goal is to get x alone. Undo the operations in the opposite order: first the addition, then the multiplication.
$10x + 4 = -26$
2
Subtract 4 from both sides:
$10x + 4 - 4 = -26 - 4 \ \Rightarrow\ 10x = -30$
3
Divide both sides by 10:
$\frac{10x}{10} = \frac{-30}{10} \ \Rightarrow\ x = -3$
4
Check: put x = -3 back into the equation.
$10\cdot(-3) + 4 = -30 + 4 = -26 \checkmark$

LaTeX source of the formulas on this page

\[ 10x + 4 = -26\ \Rightarrow\ x = -3 \]
\[ 10x + 4 = -26 \]
\[ 10x + 4 - 4 = -26 - 4 \ \Rightarrow\ 10x = -30 \]
\[ \frac{10x}{10} = \frac{-30}{10} \ \Rightarrow\ x = -3 \]
\[ 10\cdot(-3) + 4 = -30 + 4 = -26 \checkmark \]

Trying values of x in 10x + 4 = −26

x	10x + 4	Equals -26?
-5	-46	no
-4	-36	no
-3	-26	yes
-2	-16	no
-1	-6	no

Questions

What is x in 10x + 4 = −26?

The solution of 10x + 4 = −26 is x = -3.

How do you solve 10x + 4 = −26?

Subtract 4 from both sides to get 10x = -30, then divide both sides by 10 to get x = -3.

How do I check the answer?

Replace x by -3: 10(-3) + 4 = -26, which is -26.

Solve 10x + 4 = −26

How to work it out

Trying values of x in 10x + 4 = −26

Questions

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